化简[x^(3/2)]^(2/1)

化简（X+2)\（X^2+X)+(2X+1)\（X^2+3X+2)-(X-3)\(X^2+2X) 化简[(2X-3/X)-1]/(X平方-9/X) 化简：1x(x+1)+1(x+1)(x+2)+1(x+2)(x+3)+1(x+3)(x+4) 化简：1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+...+1/(x+8)(x+9) 化简：1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+.+1/(x+2007)(x+2008) 化简：1/X(X+1) +1/(X+1)+(X+2) +1/(X+2)(X+3) +.+1/(X+2006)(X+200 化简(x^2+3x+9)/(x^3-27)+(6x)/(9x-x^2)-(x-1)/(6+2x) 化简:(x-1)(2x^2-3x+2)-x(x+1)(x-2) 化简3x^2(x-1)-3x(x^2+1)+4x(2X-5) 化简：1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4) 化简~(x²+3x+9/x²-27)+(6x/9x-x²)-(x-1/6+2x) 化简x(x-2)+2x(x+1)-3x(2x-5)